Abstract：Eulerian-Eulerian two fluid models for rotating flow field ceramic dry granulation mixing process was established based on CFD method, the volume distribution of powders was simulated and the influence of the column diameter of the rotating flow field dry ceramic powder granulation method on the particle size distribution was determined. The results show that when the diameter of granulation column is 70 mm, the volume distribution of powder volume is approximately 51%, the axial cloud image powder has the maximum accumulation degree of0.50, and the maximum accumulation degree of the radial cloud is 0.45, the accumulation scope is the smallest. There is no obvious accumulation in the powder room, the powder level is the most uniform. The experimental results show that the ratio of the effective powder to the blank powder is 87%, and the effective particle size is normal distribution. At this point, the powder grading is the most uniform.

Keywords：dry granulation; prilling column; Eulerian-Eulerian two fluid models; powder gradin